All of the following are important properties of prokaryotes except
a. prokaryotes form the base of many food chains, especially those found within the open ocean.
b. prokaryotes are often decomposers and enable recycling of nutrients.
c. prokaryotes convert nitrogen-containing molecules into forms that can't be used by other organisms.
d. prokaryotes are used to make many products for humans.

What is the relation ship between structure and function in an organism

The diagram shows a chicken embryo and a human embryo

How does the closing of the ductus arteriosus and ductus venosus alter circulation in an infant? a. increases blood flow to the pulmonary artery and increases blood flow to the umbilical vein b. increases blood flow to the pulmonary artery and reduces blood flow to the umbilical vein c. reduces blood flow to the pulmonary vein and increases blood flow to the umbilical artery d. reduces blood flow to the pulmonary vein and reduces blood flow to the umbilical artery